Matemáticas mentales Worksheet
Recommended for 1er grado — 5to grado
Matemáticas mentales Worksheet
Name: ____________________Date: ____________
Instructions: Usar estrategias mentales como sumar diez, duplicar y compensar para calcular rápidamente.
20 problems
86 + 20 = ______
3 × 10 = ______
23 + 10 = ______
53 − 10 = ______
18 + 10 = ______
6 × 10 = ______
89 + 10 = ______
79 + 20 = ______
2 × 10 = ______
7 × 10 = ______
26 + 20 = ______
82 + 20 = ______
91 − 10 = ______
41 + 10 = ______
34 − 10 = ______
75 + 10 = ______
45 + 10 = ______
23 − 10 = ______
9 × 10 = ______
68 − 10 = ______
